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Chemistry
GCSE

Describe how ethanol is produced from ethene.

Ethene is hydrated with steam in the presence of a catalyst.

Answered by Lucy O. Chemistry tutor
1656 Views

How do you calculate an empirical formula

An empirical formula is the simplest ratio of atoms of each element in a compound. You will be given either the mass of each element in the compound or the % mass. 1. Divide each mass (or % mass) by the a...

Answered by Tanisha S. Chemistry tutor
4009 Views

Describe an atom in terms of its sub-atomic particles and their relative mass, relative charge and its location

An atom is made up of 3 sub-atomic particles: the proton, neutron and electron. A proton has a relative mass of 1, a relative charge of +1 and is located in the nucleus. A neutron has a relative mass of 1...

Answered by Victoria M. Chemistry tutor
2055 Views

What are the relative masses of protons, neutrons and electrons?

The relative mass of a proton is 1. The relative mass of a neutron is 1. The relative mass of an electron is 1/1840 (accept 0).

Answered by Rebecca D. Chemistry tutor
106840 Views

Nitrogen reacts with hydrogen to produce ammonia. Calculate the mass of ammonia made from 84.0g of nitrogen.

(1) First, write out the equation if it is not given: N+ 3H---> 2NH3 (2) Calculate the moles of nitrogen in the reaction using the information you have; in this cas...

Answered by Thivya T. Chemistry tutor
12573 Views

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